F.6
SEL-751 Relay Instruction Manual Date Code 20170927
IEC 61850 Communications
IEC 61850 Operation
The SEL-751 supports MMS file transfer with or without authentication; the
service is intended to support the following:
➤ CID file download and upload
➤ Settings Files download and upload
➤ Retrieval of events, and reports
MMS file services are enabled or disabled via Port 1 settings. See Virtual File
Interface on page 7.58 for details on the files available for MMS file services.
SCL Files
Substation Configuration Language (SCL) is an XML-based configuration
language used to support the exchange of database configuration data between
different tools, which may come from different manufacturers. There are four
types of SCL files:
➤ IED Capability Description file (.ICD)
➤ System Specification Description (.SSD) file
➤ Substation Configuration Description file (.SCD)
➤ Configured IED Description file (.CID)
The ICD file described the capabilities of an IED, including information on
LN and GOOSE support. The SSD file describes the single-line diagram of
the substation and the necessary LNs. The SCD file contains information on
all IEDs, communications configuration data, and a substation description.
The CID file, of which there may be several, describes a single instantiated
IED within the project, and includes address information.
Datasets
Datasets are configured using ACSELERATOR Architect and contain data
attributes that represent real data values within the SEL-751 device. See
Logical Nodes for the logical node tables that list the available data attributes
for each logical node and the Relay Word bit mapping for these data attributes.
The datasets listed in Figure F.1 are the defaults for an SEL-751 device.
Datasets BRDSet01–BRDSet07 and URDSet01–URDSet07 are preconfigured
with common FCDAs to be used for reporting. These datasets can be
configured to represent the data you want to monitor. Dataset GPDSet01,
which contains breaker status and control data attributes, is used in the default
Goose Control Publication.
Figure F.1 SEL-751 Datasets
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